Home / 2,218.22-3,061.08-1,223.48

Finding the Fourth Proportional to 2,218.22, 3,061.08 and 1,223.48

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Solution

The fourth proportional to 2,218.22, 3,061.08 and 1,223.48 is: 1,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.22 : 3,061.08 = 1,223.48 : x
  2. Step 2: Convert to fraction form
    2,218.22/3,061.08 = 1,223.48/x
  3. Step 3: Cross multiply
    2,218.22x = 3,061.08 × 1,223.48
  4. Step 4: Simplify right side
    2,218.22x = 3,745,170.16
  5. Step 5: Solve for x
    x = 3,745,170.16/2,218.22
  6. Step 6: Final answer
    x = 1,688.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.